US7125040B2 - Method of activating a safety device - Google Patents

Method of activating a safety device Download PDF

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Publication number
US7125040B2
US7125040B2 US10/844,581 US84458104A US7125040B2 US 7125040 B2 US7125040 B2 US 7125040B2 US 84458104 A US84458104 A US 84458104A US 7125040 B2 US7125040 B2 US 7125040B2
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United States
Prior art keywords
vehicle
displacement
safety device
acceleration
sensor
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Expired - Lifetime
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US10/844,581
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English (en)
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US20050006885A1 (en
Inventor
Andrea Link
Willibald Watzka
Jan Urbahn
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Assigned to BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT reassignment BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LINK, ANDREA, URBAHN, JAN, WATZKA, WILLIBALD
Publication of US20050006885A1 publication Critical patent/US20050006885A1/en
Assigned to BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT reassignment BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT CORRECTIVE COVERSHEET TO THE ASSIGNEES' ADDRESS PREVIOUSLY RECORDED ON REEL 015787, FRAME 0291. Assignors: LINK, ANDREA, URBAHN, JAN, WATZKA, WILLIBALD
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
    • B60R21/0133—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value by integrating the amplitude of the input signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
    • B60R2021/01322—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value comprising variable thresholds, e.g. depending from other collision parameters

Definitions

  • the invention relates to a method of activating safety device devices and, more particularly, to a method of operating safety devices such as air bags, belt tighteners, rollover bars, and the like.
  • an impact sensor which is an acceleration sensor that preferably generates a signal representative of the forward movement or forward deceleration (displacement) of the vehicle. If this sensor signal exceeds a threshold value, a signal is generated which, at a minimum, prepares the activation of the safety device.
  • This signal has to meet several conditions. Measured according to the total duration of a vehicle impact of, for example 30 ms, the signal has to be available at an early point in time. However, the signal also has to be unambiguous. Operating conditions of the vehicle must be unambiguously recognized which are only slightly different with respect to the sensor signal course from an actual impact, but in which the safety device should specifically not be triggered (no-fire situations).
  • One example of such an operating condition that must be recognized is an extreme stressing of the vehicle. Such an extreme stressing may occur during a fast drive over a gravel and/or pothole plagued stretch of a roadway.
  • the invention achieves this object by providing a method of activating a safety device having a first impact sensor for generating a displacement signal reflecting the movement of the vehicle in a direction of displacement, and comprising a second impact sensor arranged away from the first impact sensor for generating a displacement signal reflecting the movement of the vehicle in the same direction of displacement.
  • a processing device is provided by which the two movement signals, or signals derived therefrom, are correlated in a time-correct manner, wherein the safety device is activated according to predetermined correlations of the two signals.
  • the invention is characterized essentially by the following measures.
  • Two impact sensors are evaluated.
  • the evaluation takes place in an isochronous manner.
  • the sensor signals are related to one another. This relationship of the signals is not rigid, but rather variable with respect to the time and the amount.
  • the amount for example, the installation-site-caused variation of the reaction times of the sensors are taken into account as is the response behavior of the respective sensor, which is a function of the environment of the installation site and which, in comparison to the other sensor, may also be very different.
  • a sensor which is disposed on a rigid engine mount generates a different signal signature than a sensor which experiences a crash event over a relatively soft “active path”.
  • the sensor signals generated by different sensors are related to one another. “Different” may apply to the difference of the physical parameter (for example, acceleration and pressure) as well as to the mounting site, the response sensitivity, or also the response direction.
  • the physical parameter for example, acceleration and pressure
  • FIGS. 1 a and 1 b are diagrams illustrating a “no-fire” situation according to the invention.
  • FIGS. 2 a and 2 b are further diagrams illustrating other situations in accordance with the invention.
  • the speed changes measured at the two vehicle sites are related to one another in a correct-time manner.
  • the two movement signals are correlated in a correct-time manner, and a course curve K is obtained therefrom, which curve K permits the obtaining of information concerning the necessity of activating the safety devices.
  • FIGS. 1 a , 1 b , 2 a and 2 b Four different cases are schematically illustrated in FIGS. 1 a , 1 b , 2 a and 2 b.
  • FIGS. 1 a and 1 b show the course curves K for so-called “no-fire” crashes. These are accidents in which the safety devices should not be activated.
  • the solid line G represents the border of the “fire” region B and has a step-wise character as shown.
  • the border G is identical with trigger-level T 2 at high signal values of sensor B and identical with trigger-level T 1 for high signal values of sensor A.
  • the border G has a stepped transition from T 1 to T 2 .
  • the sensor signals are correlated in a time correct manner, which “time” dimension is not specifically shown in the two-dimensional figures.
  • the correlation of the two sensor signals with one another does not take place before one of the signals exceeds a given triggering threshold value. Also, the processing device is deactivated if, or as soon as, one of the two signals falls below its triggering threshold value.
  • the corresponding safety device(s) can also be activated in the event of a secondary side crash, if required and meaningful, and at the correct time.
  • a side crash indicates an abnormal lateral movement of the vehicle after an immediately preceding (that is, primary) abnormal acceleration of the vehicle in the longitudinal direction.
  • the correlation values are considered as time-variable threshold values which are related to one another, then the significance of this information can be explained in an example. While the corresponding side air bags and additional side safety devices are triggered in the event of a primary lateral load of more than 20 km/h (that is, a side crash at a speed of the penetrating vehicle of more than 20 km/h), during a preceding longitudinal crash the triggering of these side airbags and other side safety devices will take place only at a higher lateral load of, for example, 30 km/h.
  • the output signals of two crash sensors are fed to the triggering device(s) for the safety device(s).
  • the threshold values relevant to the triggering of the safety device are time-variable with respect to their amount and actually result in a triggering only if they exceed simultaneously defined and also time-variable threshold values, as also illustrated in the drawing (see FIG. 2 b ).
  • the invention can also be expanded to three or more dimensional phase spaces.
  • the output signals of a total of 3 or more impact sensors are isochronously related to one another.
  • A, for example, 3-dimensional crash behavior of the vehicle can be examined by means of another sensor which responds to a movement in the vertical direction.
  • a cube is designed instead of the “triggering plane” B defined in the two dimensional case of a longitudinal and a lateral sensor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
  • Automotive Seat Belt Assembly (AREA)
US10/844,581 2001-11-13 2004-05-13 Method of activating a safety device Expired - Lifetime US7125040B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10155663A DE10155663A1 (de) 2001-11-13 2001-11-13 Verfahren zur Aktivierung einer Sicherheitseinrichtung
DE10155663.2 2001-11-13
PCT/EP2002/010660 WO2003042005A1 (fr) 2001-11-13 2002-09-23 Procede d'activation de dispositifs de securite

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/010660 Continuation WO2003042005A1 (fr) 2001-11-13 2002-09-23 Procede d'activation de dispositifs de securite

Publications (2)

Publication Number Publication Date
US20050006885A1 US20050006885A1 (en) 2005-01-13
US7125040B2 true US7125040B2 (en) 2006-10-24

Family

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US10/844,581 Expired - Lifetime US7125040B2 (en) 2001-11-13 2004-05-13 Method of activating a safety device

Country Status (6)

Country Link
US (1) US7125040B2 (fr)
EP (1) EP1444116B1 (fr)
JP (1) JP4150674B2 (fr)
DE (2) DE10155663A1 (fr)
ES (1) ES2268159T3 (fr)
WO (1) WO2003042005A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11713849B2 (en) * 2016-11-29 2023-08-01 Bayerische Motoren Werke Aktiengesellschaft Method and control unit for monitoring a pressure tank system

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* Cited by examiner, † Cited by third party
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DE10152749A1 (de) * 2001-10-25 2003-05-08 Bayerische Motoren Werke Ag Verfahren zum Auslösen eines Fahrzeuginsassen-Rückhaltemittels
DE10330954A1 (de) 2003-07-08 2005-02-17 Daimlerchrysler Ag Verfahren und Vorrichtung zur Abschätzung der Schwere von Unfallereignissen
JP3858870B2 (ja) * 2003-08-05 2006-12-20 トヨタ自動車株式会社 乗員保護装置の起動制御装置
JP4131403B2 (ja) * 2003-09-05 2008-08-13 株式会社デンソー 衝突判定装置
DE102004031010A1 (de) * 2004-06-26 2006-01-12 Conti Temic Microelectronic Gmbh Vorrichtung und Verfahren zur Auslösung eines Insassenschutzsystems in einem Fahrzeug
WO2006091431A1 (fr) * 2005-02-18 2006-08-31 Siemens Vdo Automotive Corporation Détermination de plausibilité de collision latérale par la vitesse latérale
US8139439B2 (en) * 2009-03-11 2012-03-20 Schlumberger Technology Corporation Methods and systems for seismic sensor calibration
EP2347934B1 (fr) * 2010-01-26 2012-10-10 Robert Bosch GmbH Procédé et dispositif de contrôle pour la détection de collision latérale d'un véhicule
DE102011084784A1 (de) 2011-10-19 2013-04-25 Robert Bosch Gmbh Verfahren zur Plausibilisierung von Sensorsignalen sowie Verfahren und Vorrichtung zur Ausgabe eines Auslösesignals
US10422906B2 (en) * 2014-03-03 2019-09-24 Westerngeco L.L.C. Modeling and filtering coherent noise in seismic surveys
DE102015116142B4 (de) 2015-09-24 2020-10-15 Deutsche Telekom Ag Verfahren und Anordnung zum Schutz von Insassen eines Kraftfahrzeugs

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DE4324753A1 (de) 1992-08-25 1994-03-03 Daimler Benz Ag Auslösevorrichtung für eine Sicherheitseinrichtung zum Schutz von Fahrzeuginsassen
DE19651123C1 (de) 1996-12-09 1998-06-18 Siemens Ag Steuervorrichtung in einem Kraftfahrzeug
DE19740021A1 (de) 1997-09-11 1999-03-25 Siemens Ag Einrichtung für den Insassenschutz in einem Kraftfahrzeug
DE19900327A1 (de) 1999-01-07 2000-07-13 Siemens Ag Verfahren zum Steuern der Auslösung mindestens einer Zündpille eines Insassenschutzsystems eines Kraftfahrzeugs, und entsprechend ausgelegtes Inassenschutzsystem
DE19936819A1 (de) 1999-03-02 2000-09-14 Mitsubishi Electric Corp Zusammenstossdetektoreinrichtung für Fahrzeuge, die auf asymmetrische Zusammenstösse reagiert
US6271747B1 (en) 1998-04-18 2001-08-07 Daimlerchrysler Ag Method for adjusting the trigger threshold of vehicle occupant protection devices

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DE4425846A1 (de) * 1994-07-21 1996-01-25 Telefunken Microelectron Verfahren zur Auslösung von Seitenairbags einer passiven Sicherheitseinrichtung für Kraftfahrzeuge
JPH0976872A (ja) * 1995-09-14 1997-03-25 Fujitsu Ten Ltd 車両の側面衝突検知装置
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JP3204181B2 (ja) * 1996-10-23 2001-09-04 日本電気株式会社 車両の衝突判定方法及び衝突判定装置
JPH10226291A (ja) * 1997-02-13 1998-08-25 Isuzu Motors Ltd 衝突検知装置
JP3466461B2 (ja) * 1997-04-21 2003-11-10 株式会社ホンダエレシス 車体側面の変形有無を判定する方法及び装置、並びに、車両用乗員側方保護具の起動制御装置
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4324753A1 (de) 1992-08-25 1994-03-03 Daimler Benz Ag Auslösevorrichtung für eine Sicherheitseinrichtung zum Schutz von Fahrzeuginsassen
DE19651123C1 (de) 1996-12-09 1998-06-18 Siemens Ag Steuervorrichtung in einem Kraftfahrzeug
DE19740021A1 (de) 1997-09-11 1999-03-25 Siemens Ag Einrichtung für den Insassenschutz in einem Kraftfahrzeug
US6271747B1 (en) 1998-04-18 2001-08-07 Daimlerchrysler Ag Method for adjusting the trigger threshold of vehicle occupant protection devices
DE19900327A1 (de) 1999-01-07 2000-07-13 Siemens Ag Verfahren zum Steuern der Auslösung mindestens einer Zündpille eines Insassenschutzsystems eines Kraftfahrzeugs, und entsprechend ausgelegtes Inassenschutzsystem
DE19936819A1 (de) 1999-03-02 2000-09-14 Mitsubishi Electric Corp Zusammenstossdetektoreinrichtung für Fahrzeuge, die auf asymmetrische Zusammenstösse reagiert
US6426567B2 (en) * 1999-03-02 2002-07-30 Mitsubishi Denki Kabushiki Kaisha Crash detection apparatus of vehicle responsive to asymmetric collision

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11713849B2 (en) * 2016-11-29 2023-08-01 Bayerische Motoren Werke Aktiengesellschaft Method and control unit for monitoring a pressure tank system

Also Published As

Publication number Publication date
JP2005508790A (ja) 2005-04-07
US20050006885A1 (en) 2005-01-13
DE10155663A1 (de) 2003-05-22
JP4150674B2 (ja) 2008-09-17
EP1444116A1 (fr) 2004-08-11
EP1444116B1 (fr) 2006-07-12
ES2268159T3 (es) 2007-03-16
WO2003042005A1 (fr) 2003-05-22
DE50207529D1 (de) 2006-08-24

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